Display device and reverse control method thereof
By using controller circuits and image transmission interface circuits in display devices and configuring slave addresses using integrated circuit bus protocols, reverse control of electronic devices is realized, and the problem of reverse control function interfering with image data transmission in the prior art is solved. , improves operational flexibility and bandwidth utilization.
Patent Information
- Application Number
- CN202310790854.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2024-12-31
AI Technical Summary
In the prior art, the reverse control function is established on a relatively outdated transmission interface, and the reverse control in the image transmission protocol may interfere with the original image data transmission, and the original software and hardware architecture need to be modified, which adds Complexity and bandwidth loss.
By introducing controller circuits, image transmission interface circuits and input and output interface circuits into the display device, different slave addresses are configured using the integrated circuit bus protocol to realize reverse control of electronic devices, avoid interference with the transmission of other existing protocols, and Reduce dependence on the original transmission protocol.
It realizes effective reverse control of electronic devices without affecting the transmission of other existing protocols, reduces the need for modification of the original transmission protocol, and improves operational flexibility and bandwidth utilization.
Smart Images
Figure CN119232984A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a display device, and more particularly to a display device that can utilize an image transmission interface to reversely control a signal source and a reverse control method thereof. Background Art
[0002] In most applications, an electronic device can be connected to a display device via an image transmission interface and provide image data to the display device to generate a corresponding image screen. Generally speaking, an electronic device is controlled via an input-output device directly connected to the electronic device itself. In some applications, if the display device is connected to an input-output device and the display device has a reverse control function, the electronic device can also be reversely controlled by the input-output device connected to the display device. In the prior art, the reverse control function is based on an outdated transmission interface and is not applicable to the current more mainstream transmission interface. On the other hand, if the reverse control function is established in the image transmission protocol, it may interfere with the original image data transmission. Summary of the invention
[0003] In some implementations, one of the purposes of the present invention is (but not limited to) to provide a display device and a reverse control method to improve the deficiencies of the prior art.
[0004] In some embodiments, the display device includes a controller circuit, an image transmission interface circuit, and an input-output interface circuit. The image transmission interface circuit is connected to an electronic device via an image transmission interface to receive image data transmitted by the electronic device, so as to display the image data via the controller circuit. The input-output interface circuit is connected to a control device to receive a first instruction of the control device. The control device transmits the first instruction to the electronic device via the image transmission interface to operate as a human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction.
[0005] In some embodiments, the reverse control method includes the following operations: connecting an electronic device through an image transmission interface in a display device to receive image data of the electronic device and display the image data; connecting a control device through the display device to receive a first instruction of the control device; and transmitting the first instruction to the electronic device via the image transmission interface to operate as a human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction.
[0006] The features, implementation and efficacy of the present invention are described in detail below with reference to the drawings as preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1A schematic diagram showing a display system according to some embodiments of the present invention; Figure 2 According to some embodiments of the present invention, Figure 1 A schematic diagram of the operation between the electronic device, the image transmission interface circuit, the image transmission interface and the control device; and Figure 3 The figure is a flow chart showing a reverse control method according to some embodiments of the present invention. DETAILED DESCRIPTION
[0008] All words used herein have their usual meanings. The definitions of the above words in commonly used dictionaries and the use examples of any of the words discussed herein in the content of this case are only examples and should not limit the scope and meaning of this case. Similarly, this case is not limited to the various embodiments shown in this specification.
[0009] As used herein, "coupling" or "connection" may refer to two or more components making physical or electrical contact directly or indirectly, or two or more components operating or acting on each other. As used herein, the term "circuit" may refer to a device that is composed of at least one transistor and / or at least one active and passive component connected in a certain manner to process signals.
[0010] As used herein, the term "and / or" includes any combination of one or more of the listed associated items. In this document, the terms first, second, third, etc. are used to describe and identify each component. Therefore, the first component in this document can also be referred to as the second component without departing from the original intention of the case. For ease of understanding, similar components in each figure will be designated with the same reference numeral.
[0011] Figure 1 The following is a schematic diagram of a display system 100 according to some embodiments of the present invention. The display system 100 includes an electronic device 110, a display device 120, and a control device 130. In some embodiments, the electronic device 110 may be various devices having an image transmission interface 110A. For example, the electronic device 110 may be, but not limited to, a laptop computer, a desktop computer, a tablet computer, and / or the like. In some embodiments, the display device 120 may be, but not limited to, a screen, a projector, and / or the like. In some embodiments, the control device 130 may be, but not limited to, a keyboard, a mouse, a handwriting tablet, a remote controller, a touch panel, and / or various devices for users to input commands.
[0012] The display device 120 includes a controller circuit 121, an image transmission interface circuit 122, an image transmission interface 123, an input / output interface circuit 124, and an input / output interface 125. The controller circuit 121 can control the timing of the image transmission interface circuit 122 and the input / output interface circuit 124, and can be used to display the image data SD transmitted by the electronic device 100. For example, if the display device 120 is a television, the controller circuit 121 can control a panel driver (not shown) in the television to display the corresponding content of the image data SD. Alternatively, if the display device 120 is a projector, the controller circuit 121 can control a light source (not shown) in the projector to project the corresponding content of the image data SD. In some embodiments, the controller circuit 121 can be implemented by one or more digital circuits. In some embodiments, the controller circuit 121 can execute software (or a driver) to control the image transmission interface circuit 122 and the input / output interface circuit 124.
[0013] The image transmission interface circuit 122 can be connected to the electronic device 110 via the image transmission interface 123 to receive the image data SD and the read command SR transmitted by the electronic device 110. In some embodiments, the image transmission interface 123 can be a high definition multimedia interface (HDMI). In other embodiments, the image transmission interface 123 can be a display port (DisplayPort). The above types of the image transmission interface 123 are used for example, and the present invention is not limited thereto.
[0014] The input / output interface circuit 124 is connected to the control device 130 via the input / output interface 125 to receive the instruction S1 issued by the control device 130. In some embodiments, the input / output interface 125 may include, but is not limited to, a universal serial bus (USB), a PS / 2 interface and / or other subsequent interfaces that can support connection with input devices such as a keyboard and a mouse. In some embodiments, the input / output interface circuit 124 may include an integrated circuit bus (ICB) or a SPI bus. 2 C) The controller circuit of the protocol can configure a slave address for the control device 130. In this way, the input / output interface circuit 124 can be connected to the control device 130 via the slave address to receive the instruction S1 or to feed back data and / or instructions (such as the aforementioned read instruction SR) to the control device 130.
[0015] In some embodiments, the image transmission interface circuit 122 can transmit the instruction S1 issued by the control device 130 to the electronic device 110 via the image transmission interface 123, so that the control device 130 can control the electronic device 110. In some embodiments, the electronic device 110 is installed with a driver that can simulate a device connected via a specific channel in the image transmission interface 123 as a human interface device. For example, the control device 130 can be connected to the electronic device 110 via the display data channel in the image transmission interface 123, and transmit the instruction S1 to the electronic device 110 via the display data channel. In some embodiments, if the image transmission interface 123 is a high-definition multimedia interface, the electronic device 110 can use the driver to regard the instruction or data received by the pin 16 (which corresponds to the display data channel) of the image transmission interface 110A (which can also be a high-definition multimedia interface) in the electronic device 110 as the instruction or data issued by the human interface device. Thus, the electronic device 110 can be controlled by the control device 130 connected to the display device 120 (equivalently, the electronic device 110 is reversely controlled by the control device 130). For example, the control device 130 can input instructions to execute software, applications, etc. in the electronic device 110. The detailed setting method here will be referred to later. Figure 2 illustrate.
[0016] Generally speaking, the electronic device 110 can only be controlled by an input device directly connected to the electronic device 110 itself. Through the above-mentioned setting method, the electronic device 110 can be reversely controlled via the control device 130 connected to the display device 120. In other words, in the first mode, the display device 120 can be controlled by the control device 130. In the second mode, when the display device 120 receives the image data SD from the electronic device 110, the display device 120 can transmit the instruction S1 of the control device 130 to the electronic device 110 via the image transmission interface 123, so that the electronic device 110 is controlled by the control device 130. In this way, the electronic device 110 and the display device 120 can share the same control device 130, thereby reducing the number of input devices required as a whole and providing a variety of operation methods.
[0017] Figure 2 According to some embodiments of the present invention, Figure 1 Schematic diagram of the operation between the electronic device 110, the image transmission interface circuit 122, the image transmission interface 123 and the control device 130. For easy understanding, Figure 2 Only the operations between the circuits mainly related to the aforementioned human body interface device are shown, and the Figure 1 Other circuits in the
[0018] like Figure 2 As shown, the electronic device 110 may be installed with a driver (or driver program) 115, which can simulate a signal received via a specific channel CH (such as the display data channel mentioned above) in the image transmission interface 123 into a signal sent by the human body interface device. In detail, in some embodiments, the electronic device 110 includes an interface circuit 111, which can operate as an integrated circuit bus (I 2 C) of the main control terminal. The driver 115 and the interface circuit 111 can work together to simulate the control device 130 as the aforementioned human body interface device, so that the electronic device 110 can perform corresponding operations according to the instruction S1 of the control device 130. In some embodiments, the driver 115 can refer to the driver for identifying external devices in the existing operating system, so as to simulate the signal transmitted by the specific pin of the specific transmission interface (for example, the pin 16 of the aforementioned HDMI interface) as the signal sent by the human body interface device.
[0019] On the other hand, the image transmission interface circuit 122 can transmit the instruction S1 of the control device 130 to the interface circuit 111 via the specific channel CH in the image transmission interface 123. In detail, the image transmission interface circuit 122 (and / or the input / output interface circuit 124) can be operated as a slave end of the integrated circuit bus, and can configure a slave address SA1 for the control device 130, so as to connect to the control device 130 and communicate with it via the slave address SA1. Based on the integrated circuit bus protocol, the electronic device 110 can send a read instruction SR to the slave address SA1 via the specific channel CH, and the control device 130 can receive the read instruction SR and send device information related to the control device 130 in response to the read instruction SR (for example, including, but not limited to, the device type of the control device 130, such as a keyboard or a mouse, etc.), so that the electronic device 110 can confirm whether to simulate the control device 130 as a human interface device connected to the electronic device 110 via the driver 115. After confirming that the control device 130 is simulated as the human interface device, the control device 130 may issue a command S1 to control the electronic device 110 .
[0020] Furthermore, if Figure 2As shown, in different applications, there may be other devices connected to the display device 120 to transmit instructions or data to the interface circuit 111 via the specific channel CH. For example, the image transmission interface circuit 122 can configure another slave address SA2 to the device 135, wherein the device 135 can be, but not limited to, an electronic device that performs data transmission based on the Extended Display Identification Data (EDID) protocol or the High-Bandwidth Digital Content Protection (HDCP) protocol. Based on the integrated circuit bus protocol, the control device 130 is configured to correspond to the slave address SA1, and the device 135 is configured to correspond to the slave address SA2, wherein the slave address SA1 is different from the slave address SA2. In this way, the control device 130 and the device 135 can share the specific channel CH to communicate with the electronic device 110 without causing a conflict. In other words, the image transmission interface circuit 122 can use the characteristics of the integrated circuit bus protocol to configure different slave addresses to different devices so that these devices can use the aforementioned display data channel together without interfering with each other. In this way, the control device 130 can reversely control the electronic device 110 without affecting data transmission of other existing transmission protocols, and can fully utilize the channel bandwidth of the specific channel CH.
[0021] In some related technologies, the input and output devices connected to the display device use the aforementioned EDID protocol or HDCP protocol to reversely control the electronic device that provides image data. In these technologies, the instructions issued by the input and output devices sharing the same display data channel may affect the data originally transmitted using the EDID protocol or HDCP protocol, resulting in abnormal image display. In order to transmit additional information of the input and output devices, it is necessary to modify the fields in the EDID data. However, depending on different applications, the EDID data may have different settings or no free fields, which makes it difficult to implement reverse control of the input and output devices. In addition, the HDCP protocol uses an interactive program to transmit instructions and is not suitable for input and output devices. If the HDCP protocol is used to transmit the instructions of the input and output devices, unnecessary bandwidth loss will be caused. In addition, if the display device uses the aforementioned EDID protocol or HDCP protocol for reverse control, the corresponding driver in the reversely controlled electronic device needs to be modified, resulting in the need to change the original software and / or hardware architecture under these protocols. Compared to the above technology, in some embodiments of the present case, the display device 120 can configure the slave address SA1 (which is different from the slave address SA2 used by the device 135) to the control device 130 based on the integrated circuit bus protocol. In this way, the control device 130 can use the same specific channel CH to transmit the instruction S1 without affecting the original signal transmission of the device 135 or the display device 120, thereby fully utilizing the bandwidth of the specific channel CH. In addition, the electronic device 110 only needs to add an additional driver 115 to simulate the control device 130 as a human body interface device, without modifying the drivers corresponding to other existing transmission protocols.
[0022] Figure 3 A flowchart of a reverse control method 300 is shown according to some embodiments of the present invention. In operation S310, an electronic device is connected through an image transmission interface in a display device to receive image data of the electronic device and display the image data. In operation S320, a control device is connected through the display device to receive a first instruction of the control device. In operation S330, the first instruction is transmitted to the electronic device via the image transmission interface to operate as a human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction.
[0023] The description of the multiple operations of the reverse control method 300 can refer to the aforementioned multiple embodiments, so it will not be repeated here. The above multiple operations are only examples and are not limited to being performed in the order in this example. Without violating the operation mode and scope of each embodiment of the present case, the various operations under the reverse control method 300 can be appropriately increased, replaced, omitted or performed in a different order. Alternatively, one or more operations under the reverse control method 300 can be performed simultaneously or partially simultaneously.
[0024] In summary, the display device and reverse control method provided in some embodiments of the present invention can assign different slave addresses to the control device connected to the display device based on the integrated circuit bus protocol. In this way, the electronic device providing image data can be reversely controlled by sharing a channel with other existing protocols without interfering with the transmission of other existing protocols.
[0025] Although the embodiments of the present case are described above, these embodiments are not intended to limit the present case. Those with ordinary knowledge in the technical field may make changes to the technical features of the present case based on the explicit or implicit contents of the present case. All these changes may fall within the scope of patent protection sought in the present case. In other words, the scope of patent protection in the present case shall be subject to the scope of the patent application defined in this specification.
Explanation of symbols
Claims
1. A display device, characterized in that: Include: a controller circuit; an image transmission interface circuit connected to an electronic device via an image transmission interface to receive image data transmitted by the electronic device, so as to display the image data via the controller circuit; and an input-output interface circuit connected to a control device to receive a first instruction from the control device, The control device transmits the first instruction to the electronic device via the image transmission interface to operate as a human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction.
2. The display device according to claim 1, characterized in that The image transmission interface is a high-definition multimedia interface, and the image transmission interface circuit transmits the first instruction to the electronic device via a display data channel in the high-definition multimedia interface.
3. The display device according to claim 1, characterized in that The image transmission interface circuit is used for configuring a first slave address for the control device and is connected to the control device via the first slave address.
4. The display device according to claim 3, characterized in that The electronic device sends a read command to the first slave address via an Inter-Integrated Circuit protocol, and the control device responds to the read command by returning the first command to the electronic device via the image transmission interface to operate as the human interface device connected to the electronic device.
5. The display device according to claim 3, characterized in that The image transmission interface circuit is also used to configure a second slave address to a first device that performs data transmission based on an Extended Display Identification Data (EDID) protocol or a High-Bandwidth Digital Content Protection (HDCP) protocol, and the first slave address is different from the second slave address.
6. The display device according to claim 1, characterized in that The control device is operated via a driver in the electronic device to be used for controlling the human interface device of the electronic device.
7. The display device according to claim 1, characterized in that When the image transmission interface circuit receives the image data, the control device transmits the first instruction to the electronic device via the image transmission interface.
8. A reverse control method, characterized in that: include: Connecting an electronic device via an image transmission interface in a display device to receive image data of the electronic device and displaying the image data; Connecting a control device via the display device to receive a first instruction from the control device; as well as The first instruction is transmitted to the electronic device via the image transmission interface to operate as a human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction.
9. The reverse control method according to claim 8, characterized in that: Also includes: The display device is configured with a first slave address for the control device, and is connected to the control device via the first slave address.
10. The reverse control method according to claim 9, characterized in that: Transmitting the first instruction to the electronic device via the image transmission interface to operate as the human interface device connected to the electronic device, so that the electronic device operates in response to the first instruction, comprises: Sending a read command to the first slave address by the electronic device via an integrated circuit bus protocol; and The control device responds to the read instruction by transmitting the first instruction back to the electronic device via the image transmission interface, so as to operate as the human body interface device connected to the electronic device.